Leases - Net Book Value (Details) - USD ($) $ in Thousands	Mar. 04, 2017	Feb. 27, 2016
Net book values of assets under capital leases and sale-leasebacks
Accumulated depreciation	$ (132,105)	$ (128,168)
Net value	41,081	48,842
Capital leases
Obligations under financing leases	60,575	74,913
Sale-leaseback obligations	4,740	4,740
Less current obligation	(21,245)	(26,758)
Long-term lease finance obligations	44,070	52,895
Minimum payments for Lease Financing Obligations
2018	26,184
2019	15,448
2020	10,668
2021	6,800
2022	5,037
Later years	25,743
Total minimum lease payments	89,880
Amount representing interest	(24,565)
Present value of minimum lease payments	65,315
Minimum payments for Operating Leases
2018	1,050,834
2019	988,754
2020	868,907
2021	743,598
2022	640,073
Later years	3,054,697
Total minimum lease payments	7,346,863
Land
Net book values of assets under capital leases and sale-leasebacks
Gross value	5,063	5,063
Buildings
Net book values of assets under capital leases and sale-leasebacks
Gross value	135,434	136,416
Leasehold improvements
Net book values of assets under capital leases and sale-leasebacks
Gross value	1,470	1,612
Equipment
Net book values of assets under capital leases and sale-leasebacks
Gross value	$ 31,219	$ 33,919